Primoz Primoz - 4 years ago 429
PowerShell Question

Powershell and wmi, how to map logical disk/volumes to a hard disk or vice versa?

Get-WmiObject -ComputerName $ip -Credential $credential -Class Win32_logicaldisk

This gets me disks as I see them in "My computer", eg. C:, D:, E:
Now how I get corresponding underlying physical disks ?

If I run following command

Get-WmiObject -ComputerName $ip -Credential $credential -Class win32_diskdrive

I get disk 0, disk 1, disk 2

So how to find out which logical disk is on which physical disk ?

Another question is how to find out volume number ? If I run diskpart and executes "list volume" I get the following output

Volume ### Ltr Label Fs Type Size Status Info
---------- --- ----------- ----- ---------- ------- --------- --------
Volume 2 C NTFS Partition 59 GB Healthy Boot

How can I find out that logical disk C: is Volume 2 ?

best regards, Primoz.

Answer Source

Try this

Get-WMIObject Win32_LogicalDisk | Foreach-Object {
    Get-WmiObject -Query "Associators of {Win32_LogicalDisk.DeviceID='$($_.DeviceID)'} WHERE ResultRole=Antecedent"
} | Format-Table

This gives you the related instances of WIn32_logicalDisk where Win32_LogicalDisk is the dependent entity in the relationship. So, you get the Win32_DiskDrive instances.

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